Review the output of /proc/OBRP/ObjectByCBID, and take the appropriate action:

Metadata

Conclusion

No object found ("ERROR":"" )

or an object was found with no UUID metadata

If the object is not found, the message "ERROR":"" is returned.

If the object is not found, or if there is no UUID metadata, it is safe to ignore the alarm. The lack of an object, or the absence of a UUID indicates that the object was intentionally deleted.

UUID is present

Locations > 0

If there is a UUID and there are locations listed in the output, the Lost Objects alarm was a false positive. There are other object locations in the grid. You can reset the Lost Objects alarm.

UUID is present

Locations = 0

If there is a UUID but there are no locations listed in the output, the object is potentially missing.

If the ILM policy does not include an ILM rule with only one active content placement instruction, contact technical support. You could also try to find and restore the object yourself.

Support might ask you to determine if there is a storage recovery procedure in progress. That is, has a repair-data command been issued on any Storage Node and is the recovery still in progress. See "Restoring object data to a storage volume" in the recovery and maintenance instructions.